Flush-valve.



E. C. AHLHEIM.

FLUSH VALVE.

APPLICATION FILED MAY I7. 1915.

Patented June 20, 1916.

THE COLUMBIA PLANOGRAPH Co., wAsmNGToN, D. C.

EDWARD C. AHLHEIM, OFIVIANSFIELD, OHIO.

FLUSH-VALVE.

Specification of Letters Patent.

Patented .1 une 20, i916.

Application filed May 17, 1915.` Serial No. 28,547.

To all w wm t may concern .f

Be it known that l, EDWARD C. AiiLimiM, a citizen of the United States of America, residing at Mansfield, in the county of Richland and State of Ohio, have invented certain new and useful Improvements in F lush-Valves, of which the following is a specification.

This invention relates to certain new Vand useful improvements in flush valves and has for its primary aim to lprovide a valve which is automatic and ei'licient in operation and simple of construction.

A further object resides in the compact arrangement of parts wherein adjustment of interval of liow of the flushing liquid may readily be obtained.

The invention further resides in the salient features `of construction, arrangements and combinations of parts described in detail in the following specification, succinctly defined in the appended claims and illustrated in the accompanying drawings, wherein-f" Figure 1 is a top plan view of the invention in its preferred embodiment; Fig. 2 is a vertical section on the line 2-2 of Fig. 1; Fig. 3 is ahorizontal section on the line 3 3 of Fig. 2; Fig. f1 is a vertical section on the line itof Fig. 1, the view being at right angles to the section of Fig. 2 and having the lower section oi chamber removed; and Fig. 5 is a horizontal section on the line 5-5 of Fig. 2 showing the lower section.

The valve comprises, in its illustrated form, a casing consistingof an upper section A and a lower section B, the latter having an annular flange l'seating in an' annular seat 2 of the upper section and secured thereto by screws 3, suitable packing 4 being interposed therebetween.

In upper section A is a laterally directed inlet 5 leading to an inner valve chamber V6 in which operates a vertically moving valve 7 for engaging on seat 8 to close the opening 9 in the top wall of the valve chamber 6. Opening or outlet port 9 establishes communication between the valve chamber 6 and an encircling space or chamber 10 which isy shown as being interrupted by webs 11 and 12 supporting'the inner valve chamber 6 from the surrounding wall of the casing. The substantially annular chamber 10 ofthe upper section coincides with the chamber 10 ofthe lower section and the webs 11 and 12 are likewise continued, said continuations of the webs support-ing a piston chamber 13 of smaller diameter than chamber 6 and arranged in coincidence therewith. A vertical conduit 14: in web 12 establishes communication betweenthe bottom of chamber 13 and the upper portion of chamber. 6, said conduit or passage 111 terminating in ports 15 and 16 leading to the respective chambers. Valve 7 normally closes inlet 5 and port 16 and is Yformed with a hollow stem 17 which is provided with openings 18 adapted, when the stem is opened, to provide for the escape of the fluid from chamber 6 to chamber 10. Slidable in the valve stem is a push rod 19 carrying on its upper and outer end a push button 20 and on its lower terminal a valve 21 normally engaging on seat. 22 to close they passageprovided in the hollow valve stem. This valve 21 is retained seated bv the pressure of the' fiuid in chamber 6, the latter being in constant communication with the main by passage 23 leading from the inlet 5 to a point below the valve 7.

Screwedinto the lower end of upper sectionA is an interposed wall. 21 dividing chambers 6 and 13 .and provided with a central opening 25 through which slides a stem or pin 26 capped by valve 27 kwhich seats on the upper face of wall 24 to minimize the leakage between the chambers. An abutment or trip member 28 has its stem 29 threaded in the lower end of stem 26 for vertical adjustment within the chamber 13. Slidable in the latter is a vertically movable piston 30- which has a tubular stem 31 slidable through a yboss of a bottom closure 33 for the chamber 13. The tubular stem provides a drainage for any liquid which may have leaked into the chamber above the piston.

In operation` assuming that the parts ai'e in theirnormal position as shown in Fig. 2, the button 20 is initially Vpushed downwardly to unseatvalve 21 whereupon the pressure inthechamber 6 will bei'elieved, the liquid passing from passage'23'v and the chamber 6 up through stem 17 .and out openings 18 into the encircling chamber 10 from 1 whence the fluid makes its escape through the outlet 34:. Further depression of button 20 engages the latter with the stem 17` and forces the latter with its supported valve 7 to the bottom of chamber 6,

Yle

Vopeningv inlet 5 and ports'9 Vand 16, whereupon the water will pass freely through the chamber 10, a portion alsov being conducted through conduit lt into chamber 13 below the piston 30, ThiseXerts an upward pressure on the latter, causing the same to rise seat 22'.' L Fluid, thus continuing yto enter through passage 23, will elevate v'alve`7 to close inlet 5 and stopthe flow of fluid. VThe fluid below piston will gradually escape througha suitable opening provided in closure 33 .and the affected parts gravitate to normal position. y

lhat is claimed isz f 1. VA valve of the character described comprising a casingconsisting of a lower section and a superposed upper section, an inner valve chamber in they upper section supported from the casing in spaced relation thereto by a web to formV a surround# ing chamber, an inlet communicating with the valve chamber, the latter having an outlet in its top wall communicating with the surrounding chamber and a passageway connecting the inlet with the bottom portion of the valve chamber, 'a valve op.- e

erable in the Vvalve chamber to normally close the inlet and opening in the top wall Vofthe chamber and having a hollow stem Y slidably supported by the casing, said valve stem being formed withl an opening establishing communication between the surrounding chamber and stem, afrod slidable in the valve stem, a valve on the rod nor-` mally closing ycommunication between the valve stem and valveV chamber, a piston chamber arranged inthe lower vcasing section in coincidence with the valve chamber and supported from the casing by ay web constituting a continuation ofthe iirst web to form a surrounding chamber coinciding with they surrounding chamber of the upper section, a,r dividing wall interposed between the valve chamber and piston chamber, a valve seating stem slidably supported in the dividing wall and projecting into the chambers on'each side,nsaid stem being adapted to engage with the rodv supported valve to seat the latter, a piston op erable in thecpiston chamber by liuid pressure beneath the piston to slide the valve seating stem, the web and its continuation being formed withl aconduit lestablishing communication between the valve chamber and piston chamber at a point in the latter below the piston and being normally closed by they first mentioned valve,r and an outlet for the casingf 2. Afflush valve comprising a casinghav# ing an inlet andan outlet, a valve chamber interposed therein between the inlet and out-V let, avalve arranged within the chamber to close normally communication between the inlet and outlet and provided with a passage adapted to establish communication between .the valve chamber and outlet, communicative means between the inlet and the valve chamber at a point below the valve, a second valve for closing the passage in the lirst valve, means for opening the valves, means normally free of and adapted to engage the second valve to close the latter and thereby confine the fiuid under pressure beneath the lirst valve for closing the latter, and means under control of the rst valve for actuating the second valve closing means.

8. Allush valve comprising a casing hav- Y ingian inletand an outlet, a valve chamber interposed therein between the inlet and outlet, a valve arranged within the chamber toclose normally communication between the inlet and outlet and provided with a passage adapted to establish communication between the valve chamber and` outlet, com. Y

municative means between the inlet andthe valve chamber at a point below the valve,

, a second valve for closing the passage inthe first valve, means for opening the valves, a

valve closing member movable into the valve chamber to engage with .the second valve for closing the latter, vand iiuid operated means normally under control of the iirst valve for actuatingy Vthe valve closing member.

l. A flush valve comprising a casing having an inlet and an outlet, a valve chamber interposed therein between theV inlet and outlet, a valve arranged within the chamber to close normally communication 4be'- tween the inlet and outlet and provided with a passage adaptedl to establish connnunication between the valve chamber and outlet, communicative means between the inlet and the valve'chamber at apoint below the valve, a second valve forclosing the passage in theiirst valve, means Vfor openingthe valves, a Vvalve. closing member slidably mounted Vin the casingV and adapted for engagement with the second` valve to close the latter, fluid operated means for actuat-` ing the slidable valve closing member, and a fluid passage provided for Vconducting' fluid from the valve chamber to thefluid operated means, said fluid passage vbeing normally closed by said first valve.v

5. A flush valve comprising aY casing having an inlet and an outlet, a valve chamber interposed therein between the inlet and outlet, a valve arranged within the chamber to close normally communication between the inlet andy outlet and provided with a pas-1 sage adapted tol-establish communication between the valve chamber and outlet, communicative meansbetween the inlet and the valve chamber at a-point below the valve, a secondv valve for' closing the'pas'sage in vthe first valve, means for opening the valves, a valve closing member slidably mounted in the casing and adapted for engagement with the second valve to close the latter, a piston slidable in the casing for actuating the slidable valve closing member, and a liuid passage provided in the casing for conducting Huid from the valve chamber for action against the piston.

(3. A fiush valve comprising a casing having a valve chamber and a piston chamber arranged in coincidence therewith, a dividing wall partitioning the valve chamber from the piston chamber, an inlet and an outlet provided for the valve chamber, a con'nnunicative passage between the aforesaid chambers, a valve arranged in the valve chamber to normally close the communicative passage and communication between the inlet and outlet, said valve being provided with a passage for establishing communication, between the outlet and valve chamber, a second valve ior closing the passage in the valve under fluid pressure, a conduit leading from the inlet to the valve chamber at a point below thev first valve, means for opening the valves, a valve closing member slidably mounted in the dividing wall for closing the second valve, and a fluid operated piston arranged in the piston chamber for actuating the valve closing member.

7. A flush valve comprising a casing having an inlet and an outlet, a valve chamber interposed therein between the inlet and outlet and communicating therewith, a valve in the chamber normally closing communication between the inlet and outlet, said valve including a hollow stem provided with an opening establishing communication between the valve chamber and outlet, a valve normally closing the hollow stem, a communicative passage leading from the inlet to a point in the chamber below the valve, means to operate the second valve to open the valve stem, a slidably mounted stem adapted to engage the second valve to seat the latter, and means for sliding the stem.

V8. A flush valve comprising a casing having an inlet and an outlet, a valve chamber interposed therein between the inlet and outlet and communicating therewith, a valve in the chamber normally closing communication between the inlet and outlet, said valve including a hollow stem provided with an opening establishing communication between the valve chamber and outlet, a valve normally closing the hollow stem, a com- Amunicative passage leading from the inlet to a point in the chamber below the valve, means to operate the second valve to open the valve stem, a piston chamber, a piston operable therein, and means operable by the piston to seat the second valve.

9. A flush valve comprising a casing having an inlet and an outlet, a valve chamber interposed therein between the inlet and outlet and communicating therewith, a valve in the chamber normally closing communication between the inlet and outlet, said valve including a hollow stem provided with an opening establishing communication between the valve chamber and outlet, a valve normally closing the hollow stem, a communicative passage leading from the inlet to a point in the chamber below the valve, means to operate the second valve to open the valve stem, a piston chamber arranged in coincidence with the valve chamber, a dividing wall between the chambers, a stem slidable in the dividing wall for engagement with the second valve to seat the latter, vand a fluid operable piston in the piston chamber for sliding the valve seating stem.

In testimony whereof I aiix my signature in presence of two witnesses.

EDWARD C. AHLHEIM.

Witnesses:

PEARL M. YUNCHER, JOHN H. Coss.

Copies of thm patent may be obtained for ilve cents each, by addressing the Commissioner of retenu.

Washington, D. C. 

